common: fix up BOLT 7 references.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

common/wireaddr.h

@@ -27,15 +27,17 @@ struct sockaddr_un;
  *
  * The following `address descriptor` types are defined:
  *
- *   * `0`: padding.  data = none (length 0).
+ *   * `0`: padding; data = none (length 0)
- *   * `1`: ipv4. data = `[4:ipv4_addr][2:port]` (length 6)
+ *   * `1`: ipv4; data = `[4:ipv4_addr][2:port]` (length 6)
- *   * `2`: ipv6. data = `[16:ipv6_addr][2:port]` (length 18)
+ *   * `2`: ipv6; data = `[16:ipv6_addr][2:port]` (length 18)
- *   * `3`: tor v2 onion service. data = `[10:onion_addr][2:port]` (length 12)
+ *   * `3`: Tor v2 onion service; data = `[10:onion_addr][2:port]` (length 12)
- *       * Version 2 onion service addresses. Encodes an 80-bit truncated `SHA-1` hash
+ *       * version 2 onion service addresses; Encodes an 80-bit, truncated `SHA-1` hash
- *         of a 1024-bit `RSA` public key for the onion service.
+ *         of a 1024-bit `RSA` public key for the onion service (a.k.a. Tor
- *   * `4`: tor v3 onion service. data `[35:onion_addr][2:port]`  (length 37)
+ *	   hidden service).
- *       * Version 3 ([prop224](https://gitweb.torproject.org/torspec.git/tree/proposals/224-rend-spec-ng.txt))
+ *   * `4`: Tor v3 onion service; data = `[35:onion_addr][2:port]` (length 37)
- *         onion service addresses. Encodes: `[32:32_byte_ed25519_pubkey] || [2:checksum] || [1:version]`.
+ *       * version 3 ([prop224](https://gitweb.torproject.org/torspec.git/tree/proposals/224-rend-spec-ng.txt))
+ *         onion service addresses; Encodes:
+ *            `[32:32_byte_ed25519_pubkey] || [2:checksum] || [1:version]`,
  *             where `checksum = sha3(".onion checksum" | pubkey || version)[:2]`
  */